Sash-balance



Nr-TED STATES PATENT OFF-ICE.

WILLIAM MORGAN, OF EUREKA' SPRINGS, ARKANSAS.

SMH-BALANCE.

SPECIFICATION forming part of Letters Patent No. 517,760, dated April 3,1894.

Application filed March 31, v1893. `Serial No. 468.479. (No model.)

To @ZZ whom Vit may con/cern.- q

Be it known that I, WILT- IAM K. MORGAN, a citizen of the United States, anda resident of EurekaSprings, in the county of Carroll and State of Arkansas, have invented certain new and useful Improvements in Sash-Balances; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled inthe art to which it appertainsto make and use the same, reference being had tothe accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

Figure l of the drawings is a front elevation of window casing and sash with invention applied. Fig. 2 is a vertical section of same; Fig. 3 a perspective view in detail of pulley and bracket.k Fig. t isa sectional view in detail of the casing: Fig. 5 is a detail view of the plate and Figr is a perspective view of the rod or bolt.

. This invention has relation to certain new and useful improvements in. combined sash V accompanying claim. n

Referring to the accompanying drawings,`

locks and hangers, and it consists in thenovel construction and combination of parts, all as hereinafter described and pointed out in the the letter A designates a window casing,`B the upper or outer sash, and C the lower or inner sash, arranged to slidein grooves or ways in said casing in the customary manner. Said sashes are connected by a cord or chain D, connected at its vends to the central por tions of the upper rails of the respective sashes, and at its intermediate portion passing over a pulley E, hung in the central top portion of the casing. Said pulleyr is carried by a U-shap'ed bracket F, whichis set into a slot or cut-away, portion in the under face of the top piece of, the casing, the end'portions of said bracket being bent horizontally out- Ward, and screwed, or otherwise suitably se- In order to lock the sashes indifferent positions, I provide the locking arrangement now to be described. 1

.Secured to the upperface of thetop rail of the inner sash at thecentral portion thereof, isa chambered or hollowed casing G, having lateral base anges g, by means of which it is secured to the sash rail. Extending horizontally through said casing, andy having loose bearings in its end walls, is a short rod or bolt H, which at its outer projecting end has a thumb head h, and at its inner projecting end aT-head 7o. Ooiled around said rod or bolt within said casing, between a lug Z on the bolt and a washer Z', is a spring I, the tension of which acts to normally project the T-head la. Secured to the inner face of the top rail of the outer sash, at its central portion is a plate J, having therein an. elongated vertical slot j, the length of which is greater than that of the TV-head of the bolt H, but whose breadth is less than the length of said head. Y The face of the sash rail back of this slot is recessed to receive the T-head. A similar plate J is secured to the intermediate portion of the center rail of said outer sash, and a third plated2 is secured to said rail near where it joins the bottom rail.

When the two sashes are in such position as to afford the greatest extent of opening at top and bottom, the T-had of the bolt H will beprojected by its spring into engagement with the outer sash through the upper plate J, and upon giving said bolt a one-fourth turn, the two sashes will be locked fast to each other. When the sashes are opened to a less extent, the bolt is engaged through the slot in the intermediate plate J and when vthe sashes are both closed, they are locked by the engagement of the bolt through the -slot in the lower plate J kIn order to release the lock, it is only necessary to give it a onefourth turn and pull outwardly thereon. The bearing aperture in the outer end of the casing is ofV the same shape as are the slotsj in the plates J, J', J2, so that the bolt may be withdrawn until its Tfhead is entirely within the casing, when a quarter turn will lock it against being projected out of the casing. By

means of this provision, the sashesmay beV raised and lowered freely without locking.

IOC

the top portion of the casing G for the attachmeut of the chain or cord D.

The device does not in any way disligure the appearance ot the sash or casing, and the entire arrangement is simple, inexpensive, and convenient.

Having described this invention, what I claim,and desire to secure `by Letters Patent, 1s

The combination with apairiof mutually counterbalaneing and sliding sashes, ofthe lock therefor, said lockL comprising a casing adapted to be secured to the top rail of the lower sash, ay rotary bolt journaled in said casing, a T-head on the engaging end of said bolt, a bearing stud projecting beyond said head, a lug or collar on said bolt within said casing, a spring coiled around said bolt and confined between said lugor collar and the inner end wall of the casing and acting to normally project said bolt, an opening in the outer endof said casing of such a shape as to permit the passage of said T-head when the latter is turned parallel therewith, but not when atan angle thereto, and a series of plates secured to the uppersash and having each'an opening therein corresponding to the opening in the inner endof said casing, substantially as specified.

In testimony whereofI aiiix` my signature in presence of` two witnesses.

WILLIAM K. MORGAN. Witnesses:

T. J. GORDON, W. H. ELLIOTT.. 

